October

2014

 * October 05, 2014 - Hydraloid and Kinzoku Neru are introduced
 * October 10, 2014 - Hatori Longshadow is introduced
 * October 30, 2014 - Kesshō Arashi is introduced
 * October 31, 2014 - Kinzoku Nero is introduced

2013

 * October 01, 2013 - Skylox Kagamine is introduced

2012

 * October 11, 2012 - GUMI-BEAR is introduced
 * October 25, 2012 - Fumi Kimi is introduced

2009

 * October 05, 2009 - Kasane Keko is introduced

2008

 * October 01, 2008 - Hagane Miku (M-Side) is introduced
 * October 31, 2008 - Akita Naru and Kuro Meikane are introduced

2007

 * October 17, 2007 - Zatsune Miku is introduced

Misc

 * October 13, 1974 - Birthdate of Vampiku
 * October 27, 0000 - Birthdate of Kuromine Zenne and Zinne
 * October 27, 1996 - Birthdate of Emmanuel Morph
 * October 31, 0000 - Birthdate of Kuro Shinigami
 * October 31, 1993 - Birthdate of Kuro Meikane
 * October 31, 2008 - Birthdate of Kiru Meikane